Guide for band-saws.



H. B. BRUEGGEMANN.

GUIDE FOR BAND SAWS.

APPLICATION TILED DEC. 8, 1909. 964,846. Patented July 19,1910.

I 'll 'l hn-m WHHGOQGQ 5 HENRY B. BR-UEGGEMANN, or CINCINNATI, OHIO.

GUIDE FOR, BAND-SAWS.

Specification of Letters Patent.

Patented July 19, 1910.

Application filed. December 8, 1909. Serial No. 531,944.

To all whom it may concern:

Be it known that I, HENRY B. BRUEGGE- MANN, a citizen of the UnitedStates of America, and resident of Cincinnati, Hamilton county, State ofOhio, have invented certain new and useful Improvements in Guides forBand-Saws, of which the following is a specification. v

This invention relates to saw guides, and particularly to guides forband saws.

An object of this invention is to produce a saw guide which will permitof cutting designs having acute angles, or sharp curves. This and otherobjects I attain in a device embodying the features herein described andillustrated.

In the drawings accompanying this application and forming a partthereof, Figure 1 is a front elevation of a guide head for a band saw,and is equipped with an embodiment of my invention. Fig. 2 is aperspective view of a saw guide, which forms an embodiment of myinvention. Fig. 3 is a side elevation of the apparatus shown in Fig. 1.Fig. A is a section along the line 4-4: of Fig. 1. Fig. 5 is a plan viewillustrating my invention in use.

The guide head illustrated in the drawings is adapted to be mounted onthe frame portion of a band saw, and is formed in two parts, 5 and 6.The part 5 is provided with an adjustably mounted friction wheel 7,which guides the rear edge of a saw 8. The part 6 is secured to the part5 and is capable of being adjusted laterally of the saw by means of ahand screw 9' and a tightening bolt 10. Saw guides, 11 and 12, aremounted on the upper and lower sides of the head and are adapted toprevent lateral motion of the saw. Each of the guides is formed in twopieces, one of which is secured to the part 5 and the other to the part6.

Each piece of the guide 12 consists of a body 13 and a guide extension14, which projects forwardly beyond the teeth of the saw 8 anddownwardly along the saw. Each body 13 is secured to its respectivemounting elements and when properly adjusted, the extensions 13 form acylindrical envelop for the saw teeth, and the cutting edges of theteeth are located directly in the center of this cylinder.

The extension 1 1, by inclosing the saw teeth protects the operator, andat the same time forms a guide for a pattern 17 which is secured to thework, that is, to the piece to be cut by the saw. By providing thecylindrical extension and adjusting it so that the cutting edges of theteeth are located along its central axis, sharper angles and sharpercurves may be cut with the aid of a pattern than with the ordinaryguides.

One piece of each of the guides 11 and 12 is mounted upon the adjustablepart 6 of the head, and, consequently, is adjustable relative to thesaw. By providing the slots 16 in the extensions, the saw may deflectconsiderably during the cutting operations without damaging the sawteeth.

What I claim is:

1. A guide for band saws formed in separate halves and comprising a bodyand a cylindrical extension which surrounds the saw teeth and isprovided with an enlarged recess, through the center of which and alongthe central axis of said extension the teeth of the saw travel.

2. In combination with the permanently and adjustably mounted parts of aguide head for band saws, a guide comprising a body, and a cylindricalextension which surrounds the saw teeth and along the central axis ofwhich the cutting edges of the teeth travel, said guide being formed inseparate halves, one of which is mounted on each of the parts of theguide head.

3. A guide for band saws comprising a body and a cylindrical extension,which is provided with an enlarged recess, along the axis of which thesaw is adapted to travel. HENRY B. BRUEGGEMANN. Witnesses:

WALTER F. MURRAY, W. THORNTON BOGERT.

